Isolation and identification the cyanobacterium : scytonema hofmanni var. calcicolum as new record in Iraqi drinking water

الملخص EN

The aim of this study was to isolate and identify the cyanobacterium Scytonema hofmanni Var.

calcicolum from the domestic drinking tanks as a new record in Iraqi drinking water.

Scytonema hofmanni var.

calcicolum, a filamentous freshwater cyanobacterium (blue-green alga).

This alga was isolated from the walls of the domestic plastic water tanks in Al- karkh/ Baghdad city on July 2014.

The sampling was performed by collecting three samples from this tanks, the three examined samples microscopically revealed the dominance of this cyanobacterium as unialgal in the studied samples.

The results showed this alga has the ability to tolerate high temperature up to 42 Cº and very low light intensity inside the tanks which up to 10 μE / m² / s.